8425428 has 96 divisors (see below), whose sum is σ = 23224320. Its totient is φ = 2352000.

The previous prime is 8425427. The next prime is 8425433. The reversal of 8425428 is 8245248.

It is a happy number.

8425428 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8425423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118633 + ... + 118703.

It is an arithmetic number, because the mean of its divisors is an integer number (241920).

Almost surely, 2^8425428 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8425428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11612160).

8425428 is an abundant number, since it is smaller than the sum of its proper divisors (14798892).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8425428 is a wasteful number, since it uses less digits than its factorization.

8425428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 147 counting only the distinct ones).

The product of its digits is 20480, while the sum is 33.

The square root of 8425428 is about 2902.6587811867. The cubic root of 8425428 is about 203.4841832008.

The spelling of 8425428 in words is "eight million, four hundred twenty-five thousand, four hundred twenty-eight".